//收缩panel，显示title
var buttonDir = {north:'down',south:'up',east:'left',west:'right'};
	    $.extend($.fn.layout.paneldefaults,{
	        onBeforeCollapse:function(){
	            /**/
	            var popts = $(this).panel('options');
	            var dir = popts.region;
	            var btnDir = buttonDir[dir];
	            if(!btnDir) return false;
	 
	            setTimeout(function(){
	                var pDiv = $('.layout-button-'+btnDir).closest('.layout-expand').css({
	                    textAlign:'center',lineHeight:'18px',fontWeight:'bold'
	                });
	 
	                if(popts.title){
	                    var vTitle = popts.title;
	                    if(dir == "east" || dir == "west"){
	                        var vTitle = popts.title.split('').join('<br/>');
	                        pDiv.find('.panel-body').html(vTitle);
	                    }else{
	                        $('.layout-button-'+btnDir).closest('.layout-expand').find('.panel-title')
	                        .css({textAlign:'left'})
	                        .html(vTitle)
	                    }
	                     
	                }   
	            },100);
	             
	        }
	    });